/**
 * @license
 * Copyright 2017 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
 */

import * as concat_util from "./concat_util";

describe("concat_util.assertConcatShapesMatch rank=3D", () => {
  it("Non-3D tensor x1", () => {
    const assertFn = () => {
      concat_util.assertParams([1], [1, 2, 3], 1);
    };

    expect(assertFn).toThrow();
  });

  it("Non-3D tensor x2", () => {
    const assertFn = () => {
      concat_util.assertParams([1, 2, 3], [2, 3], 1);
    };

    expect(assertFn).toThrow();
  });

  it("axis out of bound", () => {
    const assertFn = () => {
      concat_util.assertParams([1, 2, 3], [1, 2, 3], 4);
    };

    expect(assertFn).toThrow();
  });

  it("non-axis shape mismatch", () => {
    const assertFn = () => {
      concat_util.assertParams([2, 3, 3], [2, 2, 4], 2);
    };

    expect(assertFn).toThrow();
  });

  it("shapes line up", () => {
    const assertFn = () => {
      concat_util.assertParams([2, 3, 3], [2, 3, 4], 2);
    };

    expect(assertFn).not.toThrow();
  });
});

describe("concat_util.computeConcatOutputShape", () => {
  it("compute output shape, axis=0", () => {
    expect(concat_util.computeOutShape([2, 2, 3], [1, 2, 3], 0)).toEqual([
      3, 2, 3
    ]);
  });
});
